Cita APA (7th ed.)

ebrary, Inc, Boucek, C., & Ottaway, M. (2010). Yemen on the brink. Carnegie Endowment for International Peace.

Cita Chicago (17th ed.)

ebrary, Inc, Christopher Boucek, i Marina Ottaway. Yemen on the Brink. Washington, D.C.: Carnegie Endowment for International Peace, 2010.

Cita MLA (9th ed.)

ebrary, Inc, et al. Yemen on the Brink. Carnegie Endowment for International Peace, 2010.